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UNITED STATES PATENT OFFICE.

JOHN T. ODONOGHUE, OF NEW YORK, N. Y.

RATCHET-REGULATOR FOR TRANSOMS, 80C.

SPECIFICATION forming part of Letters Patent No. 225,761, dated March 23, 1880.

Application filed July 9, 1879.

To all whom it may concern Be it known that I, JOHN T. ODONOGHUE, of the city and State of New York, have invented an Improvement in Ratchet-Regula tors for Blinds, Ventilators, Transoins, Mirrors, &c., ot' which the following is a specit cation.

In Letters Patent No. 111,770, granted February 14, 1871, there is a notched wheel and springs, the ends of which enter the notches of the wheel and hold the same and the blind-Slat to which it is attached. The present invention is an improvement upon the devices heretofore patented by me.

I make use of a wheel with V-shaped teeth around a portion of its periphery, and a spring with a V-shaped bearing upon the teeth of the Wheel, so as to allow the wheel to be turned and retained in any position to which it may be moved, and said wheel and spring are within a case that is adapted to be let into the transom, ventilator, or mirror, or screwed thereto, and there is a notched bearing-plate that the oblong' axis of the wheel is received into; and

the parts are constructed so as to hold the.

ventilator at any inclination to which the sa-me is moved, and there are stops to limit the extreme movement.

1n the drawings, Figure 1 is a section of the ratchet-regulator applied to the center of the transom. Fig. 2 is a horizontal section of the same. Fig. 3 is an elevation of the ratchetregulator as applied to a ventilator swinging at the bottom, the cap-plate being relnoved.

The box a is connected to or formed with the lian ge b, and there is a cap-plate, c, screwed to the box by the screws d.

The ratchet-wheel e is within the box a c, and it has cylindrical journals at each side, and one journal projects in the form of an ob- The ratchet-teeth of e are of suitable shape, and might extend entirely around the wheel, but l prefer to have said teeth only on a portion thereof, and provide the stops o s within the case or box a, to determine the amount of turning movement that can be given to the ratchet-wheel. The spring h within the case a has a V-shaped bearing against the teeth of the ratchet-wheel c, and the force of the sprin g is to be sufficient to hold the transom or ventilator, in whatever position it may be turned, to the ratchet-wheel, which remains stationary.

When this ratchet-regulator is let into the transom or ventilator near the middle of the end portions, as in Figs. 1 and 2, the same can be turned down horizontally, and the stop s will arrest the further movement, or it may be turn ed up and closed, and the positions of the teeth and Vshaped bearing of the spring are such that the ventilator when closed is pressed to its rabbet or bearing, so as to render any separate fastening unnecessary.

There should bearight and left hand ratchetregulator employed, one at each end of the transom or ventilator sash, and the square or oblong or other shaped axis of the ratchetwheels are received into the L-shaped slots of the plates c, that are screwed to the frame, and hold the ratchet wheels stationary as the spring and box turn with the ventilator or transom.

The ratchet-regulator may be placed in any convenient position; but for railway-car ventilators it is preferable to open the sash or frame at the top only. To facilitate this I make the flange b of a shape adapted to screw to the surface of the sash or transom, the box projecting behind the bottom part of the sash, as shown in Fig. 3, the other parts being constructed and operating as before described.

I claim as my invention- 1. The ratchet-regulator composed of the box or case a c, the ratchet-wheel c, the spring h, with V-shaped bearing for the teeth, the axis i', and the plate c, with L -shaped slot, substantially as set forth.

2. The combination of the case a c, ratchetwheel e, with teeth on a portion of its periphery, the spring h, with V-shaped bearing, the stop s, and the axis t, substantially as set forth.

3. The case a c, with a iiange, Z1, adapted to be screwed to the surface of the transom or ventilator, in combination with the ratchetwheel havin g inclined teeth, the spring having the V-shaped bearing, and the elongated axis fupon the journal of the ratchet-wheel, substantially as set forth.

Signed by me this 3d day of July, A. D. 1879.

JOHN T. ODONOGHUE.

Witnesses z WILLIAM G. Mor'r, GEO. T. PINOKNEY.

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